Ruben Studdard: Mariah Carey Should Be the Next 'X Factor' Judge

"American Idol" season two victor opens up on "The Wendy Williams Show" about his divorce, fellow "Idol" Clay Aiken and his new album.

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Ruben Studdard stopped by The Wendy Williams Show Tuesday morning to promote his fifth album, Letters From Birmingham, and chat it up with the television host about such hot topics as who should judge X-Factor, the truth behind his divorce, his tax problems and Clay Aiken’s chances on NBC’s The Apprentice.

He also said that although Studdard and Aiken are perceived as quiet guys, he’s not surprised that Aiken’s sense of humor is shining on The Apprentice, and added that Aiken is an entertaining and funny person, which he learned from living with the singer in the same house during American Idol’s second season, and on tour.

He even said that a production hand on the American Idol tour said that a camera should have been backstage just so people can see how “stupid” Aiken and Studdard really are.

Other revelations: Studdard has regained most of the weight he lost due to stress eating and “kicking it” following his divorce (sweets is his downfall, especially red velvet cake); the title of his single, “June 28,” is the date he got married; he is very single, and is working with his tax attorney to repay the $100,000 in taxes he owes to the IRS.

“I won’t be the first person on television with that problem and I won’t be the last,” he said.